<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<script>
		
		age = prompt("")

		function is_ou(num) {
			
			if(num%2==1){
				return false;
			}else{
				return true;
			}
		}


		res = is_ou(67);

		document.write(res);

		function get_ou_sum(num) {
			var total = 0;

			for (var i = 1; i <=num; i++) {
				
				if(i%2==0){
					total +=i;
				}
			}
			
			return total;
		}

		sss = get_ou_sum(100);

		document.write(sss);



	</script>
</head>
<body>
	
</body>
</html>